Dell Latitude 3550 Owner's Manual page 14

a. Base Cover
b. Battery
3. Perform the following steps as shown in the illustration:
a. Lift the locking tab [1].
b. Disconnect the tape that secures the system fan [2].
c. Lift the tape that secures the system fan [3].
4. Perform the following steps as shown in the illustration:
a. Disconnect the fan cable from the computer [1].
b. Unroute the cable from the slot [2].
5. Perform the following steps as shown in the illustration:
a. Loosen the scew that secures the system fan to the computer [1].
b. Lift the system fan from the computer [2].
14